Once upon a time I owned a Leaf AFi and several lenses - now long sold for more practical things. I however did accidentally hang onto one lens hood. I hate most lens hoods, as they are often cheap plastic that looks terrible, and on older lens, needs to be screwed into the filter threads sometimes. I figured instead of selling the hood on ebay, I'd print a adapter from 67mm filter thread to the Rollei Bayonet VI mount that Rollei used on many of their PQ lenses for the HY6 system. Here's the finished product:

A screencap of the STL from preview:

You can download a few different sizes of the adapter here:

62mm 67mm 72mm